If you can destroy a Klean Kanteen in normal wear and tear go for it. I abuse my bottle and it has tons of dents, scrapes, scratches and battle scars but no sign of giving up. However they are heavy and I wouldn't really want to tour with them even with the sport caps.

I would rather stick with my Camelbak Podium Chills or Ice bottles. Being able to just squeeze water into your mouth without your mouth touching the bottle is great and helps keep the funk out of your water. Plus at least with the insulated bottles they don't hold onto flavor at all so your water tastes a lot better. I don't get the plastic taste like with some bottles.

If you are dead set on KK then maybe wrap the bottoms (and maybe cage points) in duct tape or gorilla tape or similar high durability tape and hopefully that will help.